Riveting-machine.



No. 659,626. Patentedf oct.' 9, |900.

H. C. PMERDY,

RWETINGMAGHINE.

(Application filed Dec. 1l, 1899;)

(No Modal.) f 2 Sheets-Sheet l.

fame/ 5037,

lidiar/mugl arten STATES PATENT OFFICE.

HENRY C. POIWIEROY, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-FOURTH TO FREDH. SMITH, OF SAME PLACE.

RIVETING MACHINE.

SPECIFICATION forming` part of Letters Patent No. 659,626, dated October9, 1900.

Application filed. December 11,1399. seria No. 739,984. iNo model.)

To all whom t may concern:

Be it known that I, HENRY C. POMEROY, a citizen of the United States,residing at Chicago, in the county of Cook, State of I-llinois, haveinvented certain new and useful Improvements in Riveting-Maohines, ofwhich the following is a speciication, reference being had therein tothe accompanying drawings.

This invention relates to riveting-machines, and particularly toimprovements in the means for retaining in position the rivets prior totheir insertion through the material to be operated upon.

The invention has for an object to provide an improved structure wherebya rivet may be supported upon a post by its head or base and its shankprojected upward beneath the material to be operated upon, or the rivetmay be supported above said material with its shank projecting downwardtoward the material.

Other objects and advantages of the invention will hereinafter appear inthe following description, and the novel features thereof will beparticularly pointed out in the appended claims.

In the drawings, Figure l is an elevation of the machine with thefoot-power mechanism applied thereto. Fig. 2 isa vertical sectionthrough the post for supporting the rivet with its shank upward. Fig. 3is a vertical section through the jaws for supporting the rivet with itsshank downward and illustrating a modied form of supporting-spring forsaid jaws. Fig. 4 is a rear elevation of the rivet-supporting jaws. Fig.5 is a detail perspective of the rivet-supporting jaws with the partsseparate and illustrating the supportingspring shown in Fig. l, and Fig.6 is a detail showing the means of connecting the foot-power mechanismwith the operatinghandle of the machine.

Like letters of reference indicate like parts throughout the severalfigures of the drawings.

The letter A designates any suitable form of framework for supportingand containing the several parts of the riveting mechanism and ismounted upon any desired supportfor instance, as shown at B. In thepresent instance the framework is shown as provided with a pivotedvise-j aw A', adapted to be operated by means of a threaded rod A2 andhand le A3, said jaw being automatically opened when the rod is rotatedin one direction by means of a spring A4. The upper part of the frame isalso provided with the usual pivating-lugs A5 for supporting the handleC. This handle is provided with the usual camsurface C and operates upona plunger D for the purpose of forcing the rivet through the materialand afterward heading the same. The foregoing parts may, however, be ofany desired construction, as my invention relates particularly toimprovements in the rivet-holding mechanism to be hereinafterdescribed.v

For the purpose ot' supporting a rivet with its shank upward I havedevised an improved structure of post over that shown in my allowedapplication filed July 27, 1898,Serial No. 687,035. The forward part A6of the frame A is provided with a recess A7, having an aperture AS atit-s base. Into this recess a removable supporting post and sleeve areintroduced, as shown at Fig. 2. The post E is provided at its lowerportion with a supporting-block `E and at its upper portion with asleeve E2, adapted to support material above the shank of the rivetresting upon the post E. This sleeve is normally held in an elevatedposi-r tion, as shown in Fig. 2, by means of a coiled spring E3,operating against an annular flange E4 upon the inner face of the sleeveE2, and the lower portion of said sleeve is seated in a recess E5,formed in the block E". Beneath the flange E4 is a depending stop E6 tolimit the downward movement of the sleeve when the same has passed belowthe upper face of the supporting-head E7 upon the post E. It will beseen that the annular flange E4 limits the upward movement of thesleeve, while the stop E6 limits its downward movement, and all of theparts of the post, sleeve, block, and spring are so riveted togetherthat they may be removed from the socket or recess A7 in the frame andreplaced by a different size of sleeve and post for use in connectionwith various sizes of rivets. This removal is effected by means of atool introduced through the opening A8, by which the block E' may IOO beforced upward Vto remove the post, sleeve, block, and spring from therecess. It will thus be seen that rivets having different sizes of heador base can he used in the machine by simply changing the size of postand sleeve located in the recess. The plunger D in its descent forcesthe rivet through the material and heads the same, as described in theabovementioned application and is common in this art. If it be desired,however, to support the rivet with its shank projecting downward, thejaws F may be used. These jaws are pivoled upon a collar F by means of astud F2 at the back thereof, and each jaw is provided with an angle armor finger F3, provided with a tapering seat F4, within which the rivetmay be supported. The jaws may be secured upon the stud F2 by means of asecuring-nut F5 or in any desired manner and are held in contact witheach other and withfa centering-stop F6 by means of a tension-spring F7,supported upon the stud F2 and provided with angular ends F8, adapted toengage each of the jaws, preferably by entering a recess in the same.The collar F' is provided with an aperture F9, through which the plungerD passes, and said plunger is provided atits lower .end with a taperedportion D', which in its downward movement engages the tapering socketsF4 in the arms F3 of the jaws F, thus forcing the same apart andreleasing the rivet when the shank of the saine has come into contactwith the material operated upon.

For the purpose of permitting a preliminary downward movement of thejaws before the same are separated for the releasing of the rivet thejaws may be yieldinglj7 supported by means of a spring or springs,preferably as shown in Figs. 1 and 5, wherein a spring G is providedwith a coiled portion G' and projecting end G2, adapted to be secured tothe frame A, while the opposite end G2 of the spring G is pivotallyconnected to the collarF by means of pivot-pins G3 upon each side of thecollar. By this means the collar will be moved downward by the pressureof the plunger exerted upon the head of the rivet and uprights andcenters the same until the shank of the rivet comes in contact with thematerial. The increased pressure then separates the jaws of the holderand permits the shank of the rivet to pass through the material and bereleased from the jaws when the continued pressure upon the rivetexpands the shank of the same upon the post E, thus heading the sameupon the opposite face of the material operated upon.

In Fig. 3 Ihave illustrated a modified structure for supporting a collarF', which consists of a sleeve H, secured to the collar and extendingupward into a recess H', formed in the head of the frame A. Surroundingthis collar is a retracting-spring H2, which rests upon the base of therecess at its lower end and at its upper end bears againstatension andguiding nut H3. It will be understood in each instance that the plungerD is properly elevated by any suitable form of spring-for instance, aspring D2-bearing against a head D3, carried by the plunger,

and seated in the recess D4, formed in the frame A.

In passing rivets through material where greater pressure is requiredthan can be ordinarily exerted by the hand upon the lever O it has beenfound desirable to provide a simple and readily-attached foot-powermechanism, and for this purpose I have devised a structure embodying afoot-lever I, pivoted at I to any suitable support and normally elevatedby means of a tension-spring I2 or other suitable spring extending fromsaid lever to a fixed support. Extending upward from the lever is a linkI3, to which there is pivoted at I4 parallel arms I5, extending uponopposite sides of the machine and pivotally connected at their upperends IG to lugs C2, extending outward at opposite sides of the handle C.This structure of foot-power mechanism can be readily applied to thehand-machine whenever desired and detached therefrom by simplydisconnecting the arms I5 from the lugs C2, and the pivotal connectionat I4 permits the parts to be folded in a small and convenient space forthe purpose of packing and transportation. It will be seen that pressureupon the lever I will depress the cam-lever (l, thus effecting theriveting operation, while the spring I2 will return the parts to anelevated position. I

The operation of the rivet-holding mechanisms and the foot-power devicewill be apparent from the foregoing description, and it is also obviousthat While the rivet-holding devices are adapted for coperation witheach other, thus producing a machine adapted to operate with therivet-shank upward ordownward, still either of these devices might beomitted and the remaining one used alone. It will be seen, further, thatthe post E can be used either to support the head of the rivet or toupset the shank thereof when it is passed through the material and thatthe plunger D will operate to upset the extending shank of the rivetwhose head is su pported upon the post E,while the arms F3 of the jawswill rest upon the upper surface of the material operated upon, thusholding the same Iirm While the rivet passes through the material. Whenthe jaws are used to support a rivet with its shank downward, it will beseen that the sleeve E2 will rest upon the under surface of thematerial, thus always holding the same during the riveting operation.

It is obvious that changes may be made in the details of constructionand conguration without departing from the spirit of the invention asdefined by the appended claims.

What is claimed isl. A rivet-holding pocket comprising a recessedblock,asupportingpost secured within said block and recess and having ahead at its upper end, a sleeve surrounding said head IOO IIO

gage beneath said head, a spring surrounding said post between saidsleeve-flange and l5 block, an extension carried by the sleeve belowsaid flange and adapted to contact with said block in the downwardmovement of the sleeve; substantially as specified.

In testimony whereof I affix my signature 2o in presence of twowitnesses.

HENRY C. POMEROY.

Witnesses: Y

FRED H. SMITH, E. FLORENCE SMITH.

